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26	26	The Dragino NDDS75 is a (% style="color:blue" %)**NB-IoT Distance Detection Sensor**(%%) for Internet of Things solution. It is designed to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses ultrasonic sensing technology for distance measurement, and temperature compensation is performed internally to improve the reliability of data.
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30	30	The NDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc. It detects the distance between the measured object and the sensor, and uploads the value via wireless to IoT Server via NB-IoT Network.
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34	34	NarrowBand-Internet of Things (NB-IoT) is a standards-based low power wide area (LPWA) technology developed to enable a wide range of new IoT devices and services. NB-IoT significantly improves the power consumption of user devices, system capacity and spectrum efficiency, especially in deep coverage.
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38	38	NDDS75 supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP** (%%)for different application requirement.
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42	42	NDDS75 is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), It is designed for long term use up to 5 years. (Actually Battery life depends on the use environment, update period & uplink method)
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46	46	To use NDDS75, user needs to check if there is NB-IoT coverage in local area and with the bands NDDS75 supports. If the local operate support it, user needs to get a NB-IoT SIM card from local operator and install NDDS75 to get NB-IoT network connection.
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57	57	== 1.2 ​ Features ==
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59	59	* NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
60	60	* Ultra low power consumption
61	61	* Distance Detection by Ultrasonic technology
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69	69	* Micro SIM card slot for NB-IoT SIM
70	70	* 8500mAh Battery for long term use
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	66	+
72	72	== 1.3  Specification ==
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99	99	* STOP Mode: 10uA @ 3.3v
100	100	* Max transmit power: 350mA@3.3v
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102	102	== ​1.4  Applications ==
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104	104	* Smart Buildings & Home Automation
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155	155	* Your local operator has already distributed a NB-IoT Network there.
156		-* The local NB-IoT network used the band that NDDS75 supports.
	152	+* The local NB-IoT network used the band that NSE01 supports.
157	157	* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
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324	324	In this mode, uplink payload includes in total 14 bytes
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327		-(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
	323	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
328	328	|=(% style="width: 60px;" %)(((
329	329	**Size(bytes)**
330		-)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 100px;" %)**2**|=(% style="width: 60px;" %)**1**
	326	+)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 80px;" %)**2**|=(% style="width: 60px;" %)**1**
331	331	|(% style="width:97px" %)**Value**|(% style="width:83px" %)[[Device ID>>||anchor="H2.4.1A0A0DeviceID"]]|(% style="width:41px" %)[[Ver>>||anchor="H2.4.2A0VersionInfo"]]|(% style="width:46px" %)[[BAT>>||anchor="H2.4.3A0BatteryInfo"]]|(% style="width:123px" %)[[Signal Strength>>||anchor="H2.4.4A0SignalStrength"]]|(% style="width:120px" %)[[Distance (unit: mm)>>||anchor="H2.4.5A0Distance"]]|(% style="width:80px" %)[[Interrupt>>||anchor="H2.4.6A0DigitalInterrupt"]]
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457	457	Get the distance. Flat object range 280mm - 7500mm.
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460	460	For example, if the data you get from the register is **__0x0B 0x05__**, the distance between the sensor and the measured object is
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601	601	== 2.7  ​Firmware Change Log ==
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605	605	Download URL & Firmware Change log
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609	609	[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/]]
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614	614	Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
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851	851	(% style="color:#037691" %)**Package Includes**:
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853		-* NDDS75 NB-IoT Distance Detect Sensor Node x 1
	843	+* NSE01 NB-IoT Distance Detect Sensor Node x 1
854	854	* External antenna x 1
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860	860	(% style="color:#037691" %)**Dimension and weight**:
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862	862	* Device Size: 13.0 x 5 x 4.5 cm
863	863	* Device Weight: 150g
864	864	* Package Size / pcs : 15 x 12x 5.5 cm